Using twisted.enterprise.adbapi and Nevow, I am rendering a big table of entries from one SQL table, each of which has table cells that can contain multiple entries from another SQL table. I have some stan code working for the top-level entries with a top-level render=directive("sequence"), but am wondering how to go about rendering the table-within-a-cell for the second-level entries. Can sequence directives be nested, or would I have to manually run the second-level SQL queries in some sort of fire-and-wait-for-the-deferred iteration from within the render_ method of the top-level sequence? The latter sounds like it would be very difficult to keep from blocking. Thanks for any help. I am finding Nevow to be fascinating and powerful, but very difficult to understand and use. -Ed Suominen